function pDraw::processScale in Visitors 7

Same name and namespace in other branches

1. 7.2 pChart/class/pDraw.class.php \pDraw::processScale()

1 call to pDraw::processScale()

pDraw::computeScale in pChart/class/pDraw.class.php

File

pChart/class/pDraw.class.php, line 2526

Class

pDraw

Code

function processScale($XMin, $XMax, $MaxDivs, $Factors, $AxisID) {
  $ScaleHeight = abs(ceil($XMax) - floor($XMin));
  if (isset($this->DataSet->Data["Axis"][$AxisID]["Format"])) {
    $Format = $this->DataSet->Data["Axis"][$AxisID]["Format"];
  }
  else {
    $Format = NULL;
  }
  if (isset($this->DataSet->Data["Axis"][$AxisID]["Display"])) {
    $Mode = $this->DataSet->Data["Axis"][$AxisID]["Display"];
  }
  else {
    $Mode = AXIS_FORMAT_DEFAULT;
  }
  $Scale = "";
  if ($XMin != $XMax) {
    $Found = FALSE;
    $Rescaled = FALSE;
    $Scaled10Factor = 0.0001;
    $Result = 0;
    while (!$Found) {
      foreach ($Factors as $Key => $Factor) {
        if (!$Found) {
          if (!($this
            ->modulo($XMin, $Factor * $Scaled10Factor) == 0) || $XMin != floor($XMin)) {
            $XMinRescaled = floor($XMin / ($Factor * $Scaled10Factor)) * $Factor * $Scaled10Factor;
          }
          else {
            $XMinRescaled = $XMin;
          }
          if (!($this
            ->modulo($XMax, $Factor * $Scaled10Factor) == 0) || $XMax != floor($XMax)) {
            $XMaxRescaled = floor($XMax / ($Factor * $Scaled10Factor)) * $Factor * $Scaled10Factor + $Factor * $Scaled10Factor;
          }
          else {
            $XMaxRescaled = $XMax;
          }
          $ScaleHeightRescaled = abs($XMaxRescaled - $XMinRescaled);
          if (!$Found && floor($ScaleHeightRescaled / ($Factor * $Scaled10Factor)) <= $MaxDivs) {
            $Found = TRUE;
            $Rescaled = TRUE;
            $Result = $Factor * $Scaled10Factor;
          }
        }
      }
      $Scaled10Factor = $Scaled10Factor * 10;
    }

    /* ReCall Min / Max / Height */
    if ($Rescaled) {
      $XMin = $XMinRescaled;
      $XMax = $XMaxRescaled;
      $ScaleHeight = $ScaleHeightRescaled;
    }

    /* Compute rows size */
    $Rows = floor($ScaleHeight / $Result);
    if ($Rows == 0) {
      $Rows = 1;
    }
    $RowHeight = $ScaleHeight / $Rows;

    /* Return the results */
    $Scale["Rows"] = $Rows;
    $Scale["RowHeight"] = $RowHeight;
    $Scale["XMin"] = $XMin;
    $Scale["XMax"] = $XMax;

    /* Compute the needed decimals for the metric view to avoid repetition of the same X Axis labels */
    if ($Mode == AXIS_FORMAT_METRIC && $Format == NULL) {
      $Done = FALSE;
      $GoodDecimals = 0;
      for ($Decimals = 0; $Decimals <= 10; $Decimals++) {
        if (!$Done) {
          $LastLabel = "zob";
          $ScaleOK = TRUE;
          for ($i = 0; $i <= $Rows; $i++) {
            $Value = $XMin + $i * $RowHeight;
            $Label = $this
              ->scaleFormat($Value, AXIS_FORMAT_METRIC, $Decimals);
            if ($LastLabel == $Label) {
              $ScaleOK = FALSE;
            }
            $LastLabel = $Label;
          }
          if ($ScaleOK) {
            $Done = TRUE;
            $GoodDecimals = $Decimals;
          }
        }
      }
      $Scale["Format"] = $GoodDecimals;
    }
  }
  else {

    /* If all values are the same we keep a +1/-1 scale */
    $Rows = 2;
    $XMin = $XMax - 1;
    $XMax = $XMax + 1;
    $RowHeight = 1;

    /* Return the results */
    $Scale["Rows"] = $Rows;
    $Scale["RowHeight"] = $RowHeight;
    $Scale["XMin"] = $XMin;
    $Scale["XMax"] = $XMax;
  }
  return $Scale;
}